Trail Running calendar near Builth Wells 2026-2027

Join this multi lap marathon and half marathon event in Worcester featuring a flat off road course. Run solo or in relay teams with fancy dress and support local stroke recovery charities.

Explore the limestone cliffs and golden beaches of South Wales in the Gower Peninsula Ultra Challenge. Choose from multiple distances between 10km and 100km with full support and camping at the historic Penrice Castle basecamp.

Trail races on the private Merthyr Mawr Estate combine dune, hill and coastal terrain. Event options include a 12K, a new 40K and a selection of family races.

Cross all fourteen 3000ft peaks in Snowdonia on this guided 50km mountain challenge. Choose between a continuous 20-hour push or a two-day journey with expert leaders and full support.

Three point-to-point coastal races along the Wales Coast Path finishing at the Norwegian Church in Cardiff Bay. Routes feature beaches, dunes, cliffs and mapped GPS navigation with checkpoint support and live tracking.

Test your physical endurance at Huntley Estate with eight strength tests and eight one kilometer off road trail runs. Earn your official time and medal in this outdoor challenge organized by Trimax Events.

Test your endurance at this 12 hour night running event in Bridgend. Navigate forest trails and hills across multiple 10 mile loops starting at dusk and finishing at dawn.

On Sunday 19 July 2026 the Wye Valley Tunnel Run near Chepstow offers Colourbust fun runs plus 10 km, half and full marathon courses along the Wye Valley Greenway, including over 1 km of tunnel, support stations and finish medals.

A scenic trail run in Herefordshire starting from Aymestrey. Choose between a 10-mile route with 1,800 feet of climb or a 5-mile option. The course features lanes, forest tracks, and trails.

A traditional off-road fell race on 19 July 2026 at Selworthy Beacon, about 4 miles with 1000 ft ascent and self-navigation required; entry is £12 for FRA members and £14 for non-members.

Experience the woodland trails and lakeside scenery of Llys y Fran Lake in this professional series event. Featuring a timed path course through Pembrokeshire this trail run offers both ten and five kilometer distances.

Experience a guided three day journey through Northern Snowdonia covering 47 mountain peaks and 9000 meters of ascent. This fully supported 100 km loop offers a professional mountaineering experience in small groups.

A marked fell race in South Wales on 23 July 2026, covering 5.5 km with 315 m of climb. Entry on the day costs £3 and the minimum age is 16. Post race tea and cake are available; bring your own mug.

A 100 km route across the Brecon Beacons with 3178 m ascent, six staffed checkpoints and a 24 hour cut off. Entry by application on 25 July 2026 requires prior ultramarathon experience and competent map and compass navigation.

A 100 mile mountain ultramarathon following the Beacons Way National Trail through the Brecon Beacons. This self navigation race features over 6000m of ascent and passes the highest peaks in South Wales.

Run along the scenic banks of the River Severn on a flat disused railway line. Choose from multiple distances ranging from 9 miles to a 37 mile ultra marathon with regular support stations.

Experience the wild beauty of the Brecon Beacons with a range of trail races from 12km to 110km. This UTMB Index event offers multi-stage and single-day options through the rugged hills of Wales.

Join this flexible 7 hour time challenge at Dare Valley Country Park where you can run or walk any distance from 3km to an ultra-marathon on scenic well-maintained paths.

Experience the Somerset coastline and Exmoor on this versatile challenge featuring distance options from 10km to a 50km loop. Enjoy full support with rest stops, camping at Dunster Castle, and a festival atmosphere.

Test your stamina at MacTuffX Birmingham through a series of timed interval repetitions. Choose between solo, doubles, or relay categories across ten sets of 400 or 800 meters in this high energy summer event.